php 如何在php中创建对象数组
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How to create array of objects in php
提问by Alex Miles
I'm attempting to create an array of objects in php and was curious how I would go about that. Any help would be great, thanks!
我正在尝试在 php 中创建一个对象数组，并且很好奇我将如何去做。任何帮助都会很棒，谢谢！
Here is the class that will be contained in the array
这是将包含在数组中的类
<?php
class hoteldetails {
private $hotelinfo;
private $price;
public function sethotelinfo($hotelinfo){
$this->hotelinfo=$hotelinfo;
}
public function setprice($price){
$this->price=$price;
}
public function gethotelinfo(){
return $hotelinfo;
}
public function getprice(){
return $price;
}
}
And here is what I am attempting to do-
这就是我正在尝试做的-
<?PHP
include 'file.php';
$hotelsdetail=array();
$hotelsdetail[0]=new hoteldetails();
$hotelsdetail[0].sethotelinfo($rs);
$hotelsdetail[0].setprice('150');
?>
The class attempting to create the array doesn't compile but is just a best guess as to how I can do this. Thanks again
尝试创建数组的类不会编译，但只是我如何做到这一点的最佳猜测。再次感谢
回答by slhck
What you should probably do is:
你可能应该做的是：
$hotelsDetail = array();
$details = new HotelDetails();
$details->setHotelInfo($rs);
$details->setPrice('150');
// assign it to the array here; you don't need the [0] index then
$hotelsDetail[] = $details;
In your specific case, the issue is that you should use ->, not .. The period isn't used in PHP to access attributes or methods of a class:
在您的具体情况下，问题是您应该使用->，而不是.. PHP 中不使用句点来访问类的属性或方法：
$hotelsdetail[0] = new hoteldetails();
$hotelsdetail[0]->sethotelinfo($rs);
$hotelsdetail[0]->setprice('150');
Note that I capitalized the class, object, and function names properly. Writing everything in lowercase is not considered good style.
请注意，我正确地将类、对象和函数名称大写。以小写形式编写所有内容不被认为是好的风格。
As a side note, why is your price a string? It should be a number, really, if you ever want to do proper calculations with it.
作为旁注，为什么你的价格是一个字符串？它应该是一个数字，真的，如果你想用它做适当的计算。
回答by Bryant Hymanson
You should append to your array, not assign to index zero.
您应该附加到您的数组，而不是分配给索引零。
$hotelsdetail = array();
$hotelsdetail[] = new hoteldetails();
This will append the object to the end of the array.
这会将对象附加到数组的末尾。
$hotelsdetail = array();
$hotelsdetail[] = new hoteldetails();
$hotelsdetail[] = new hoteldetails();
$hotelsdetail[] = new hoteldetails();
This would create an array with three objects, appending each one successively.
这将创建一个包含三个对象的数组，依次附加每个对象。
Additionally, to correctly access an objects properties, you should use the ->operator.
此外，要正确访问对象属性，您应该使用->运算符。
$hotelsdetail[0]->sethotelinfo($rs);
$hotelsdetail[0]->setprice('150');
回答by Bhupendra Jha
You can get the array of object by encoding it into json and decoding it with $assoc flag as FALSE in json_decode() function.
您可以通过将对象数组编码为 json 并在 json_decode() 函数中使用 $assoc 标志将其解码为 FALSE 来获取对象数组。
See the following example:
请参阅以下示例：
$attachment_ids = array();
$attachment_ids[0]['attach_id'] = 'test';
$attachment_ids[1]['attach_id'] = 'test1';
$attachment_ids[2]['attach_id'] = 'test2';
$attachment_ids = json_encode($attachment_ids);
$attachment_ids = json_decode($attachment_ids, FALSE);
print_r($attachment_ids);
It would render an array of objects.
它会渲染一个对象数组。
output:
输出：
Array
(
[0] => stdClass Object
(
[attach_id] => test
)
[1] => stdClass Object
(
[attach_id] => test1
)
[2] => stdClass Object
(
[attach_id] => test2
)
)
